Cooper, Ilan - In: Review of Financial Studies 22 (2009) 7, pp. 2601-2633
The output gap, a production-based macroeconomic variable, is a strong predictor of U.S. stock returns. It is a prime business cycle indicator that does not include the level of market prices, thus removing any suspicion that returns are forecastable due to a "fad" in prices being washed away....